NGSS.MS-PS2-1

Which is true from Newton's Third law of motion?

• For every action force there is a smaller reaction force in the opposite direction.
• For every action force there is an equivalent reaction force in the opposite direction.
•  Both 1 and 2
• None of the above

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Balanced or Unbalanced?

• Balanced 
• Unbalanced

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What law of motion does this picture represent?

• Newtons 1st law
• Newtons 4th law 
• Newtons 3rd law 
• Newtons 2nd law

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NGSS.MS-PS2-1

Any push or pull on an object.

• force
• velocity 
• inertia
• momentum

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NGSS.MS-PS2-1

A bowling ball is rolled with a certain speed and strikes a bowling pin with a force indicated by the arrow in this illustration. When the bowling ball strikes the bowling pin, the force applied by the pin to the ball -

• depends on the mass of the bowling pin.
• is equal to the force applied by the ball.
• must be zero, since the pin is not moving.
• is equal to the force of gravity on both.

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NGSS.MS-PS2-1

What is the net force?

• 65 N left
• 65 N right
• 35 N left
• 35 N right

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According to Newton's Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because

• the force sent the person forward, there is an equal force pushing back on the skateboard
• the pull of gravity on the person is the same as on the skateboard, regardless of size
• the air resistane on the person is great and the friction on the skateboard is small
• the mass of the skateboard is the same as the mass of the person jumping off

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NGSS.MS-PS2-1

According to Newton’s third law of motion, the strength of a reaction force is ____________________ the strength of the action force.

• equal to

• negative to

• positive to

• greater than

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NGSS.MS-PS2-1

The force between the two people through the rope is

• Contact Pull

• Non-contact Pull

• Contact Push

• Non-contact Push

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Your friend pushes you for making fun of him/her. What is the reaction force?

• You pushing back on your friend

• You pushing on the ground

• There is no reaction force

• Your friend pushing on the ground

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